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TO ALL WHOM IT MAY- OONCERN:

Quint tatrs gstellt .@ffirr.I

HIRAM SMITH JIND THOMAs J. IIIIMIS, OFNORWICH, CONNECTICUT. l Letters Patent Nc. 60,8070, dated January 1, 1867.

IMPROVEMENT IN MAOBINBsrOs T'rNoNINe BLIND-STATS AND BORING THB sTILEs.

ilge-dgehnle referat te in tten @met prima :mh makin-t pnt at its am;

Be it known that we, HInAM- SMITH and THOMAS J. LUMIS, of Nonvch, in. the county of New Loudon,- and State of Connecticut, have invented a. new and improved Machiucifor Tenoning Slats' and- Boiing' Stiles and we do hereby declarethat the following is 'a full, clear :t description thereof, reference being had to the accompanying drawings, makingk apart of this spawn-5.1:. Lon, in wl1ich;-`

Figure 1 is a plan view of the-machine.

Figure 2 is an elevation of the front of the same.

Figure 3 is a cross-section, taken through the machine in thel vertical plane indicated in red linesznr,.ig.. I.

Figure 4`is an elevation of one end of the machine. i

' Similar letters of reference indicate corresponding parts in the several gu'r'es. I j

This invention relates to certain improvements on machinery for boring blind-Stiles, and also for tenonving slats for window blinds. The invention consists in combining with a boring tool a springe gauge, which is so constructed and applied to an adjustable bearing on the arbor support of the boring tool that it Willv serve' as a means for stopping and holding the Stiles upon their table at the required points for boring the` holes in these stiles, after the required distance apart fol-'the holes has been once determined, as will be hereinafter described. 'It also consists in sustaining the slats between two turning centres during the operation of forming the shoulders on the ends of these slats; said centres being so constructed and operated as to serve, in conjunction with the shoulder` cutters, for'producing the tenons on the slats, as lwill be hereinafter described.

To enable. others skilled in the art to understand our invention, we will describe its construction and operation.

In the accompanying drawings, represents the frame of the machine, andrA1 a long driving-belt drum, which is supported at its ends in bearings upo'n the lower cross-beams at the Y endsof the frame. C" C' are two horizontal shafts which extend longitudinally across the top of the frame A, and have their ends supported in bearings upon the u pper cross-beamspf this frame. 'The longitudinal shaft, yC, has three forked standards, D D D", secured rigidly to it; which standards serve as bearings hr three arbors a a al, upon which small belt drums, b I; b', are keyed,`that receive rotary motion from 'the dru'm, A', through the belts, as. shown in fig. 1. The two arbors, a a, have circular-saws, c @suitably secured on their inner ends; whichlsaws are designed/for cutting the shoulders at the ends ofthe vslats and leaving the tenons thereon. To 'one end of the arbor, al, an auger, az, is applied for boring the stiles which receive the tenons on the slats. Thisioperation of boring will be hereinafter described. In front of the two saw-carrying arbors, a a, two standards, E E, are secured to a rocking-shaft Cl', which standards are forked like those which carry the auger and saw arborsI above'desoribed. These two forked standards, E, serve as bearings for two arbors d d, whichdreceive a rotary motion from the drum, A', by means` of belts, e e, and small belt drums, e' e', between the forked ends of the standards. On theinner or opposite` endsof arbors d d, tubular centres, d' d', are formed or suitably secured, which terminate in sharp cutting edges for cutting in a direction with the length of the slats that are confined and centered between them. The outer ends of the arbors, oZ d, have annular grooves formed in them, which are for the purpose of receiving the forked ends of arms F F. These arms are secured at theirlower ends to reciprocating rods ff, which pass through their respective standards, E E, directly above, and parallel to, the shaft C, andenter a circular box G which is secured upon this shaft, C', betweenl said standards E, as shown in figs. land 2. The inner ends of rods ffare curved find secured on opposite sides of the centre of box G to a vibrating lever, G', which is pivoted to the central pin of said box. One end of the lever, G', projects through an oblong slot through the front edge of the box G, so that it can be conveniently taken hold of and vibrated. By means of lever G the attendant causes the two centering cutters, d1 d1, and their arbors,l to advance toward each other andretreat, at pleasure, while/they are rotating. In front of the centering cutters are two standards-H H, which are secured to the front rail o f frame A, so that they can be adjusted further apart, at pleasure. The upper ends of these standards are curved, so as to be brought near the centering cutters, and are pro-vided with vertically adjustable slat restsfg g, for gauging the slats and supporting them in av proper position to be griped between said centering cutters. The'slat rests, g, are vertically adjustable foI adapting the machine to tenon slats of di'erent widths, and the standards,- H, are laterally adjustable to adapt the machine for slats of existo diil'erent lengths. The standards, D D, and E E, as well as the boxl G, are secured to their respective shafts C C', lso that they can be loosened and adjusted for slats of diiierent lengths. The machine being adjusted as above set forth for producing a tenon on a slat of a given length, 'such slat is putupon the rests,g g, andgriped between thercentres CZ d', after which the shaft, CI', is `moved about its axis by the operator with his hand on le'ver G", and the rotating slat brought up to the rotating saws c c, which .cut into the slat in a direction at'. right angles to the-axis ,of the centering portions d. When the-saws complete their work, the operator moves the lever, G', quickly to one side, and .thus causes the cutters, al d{, to form the rounded tenons. The lever, G', is then moved in an opposite direction to release'the slat, and downward to bring thevcentering cutters in a position to gripe another slat. In order to have the tenons on the ends of the slats enter the holes in the stiles readily, the inner ends (of the holes of` thecentres, d d', are contracted, so as to give a slight taper to the extremities of the tenons, as shown in iig. 5. It is obvious that the same result will be producedby having the saws,'cy c, advance to the slat instead of having the slat moved up to the saws. I have applied stoppins, I7', on the oscillating shaft, C', and frame A', for determining the length of vibration of this shaft, and preventing the centerin'g cutters from movingtoo far forward or backward. As the axes of the arbors, d d, do not move concentric with the axis of the main driving drum A,ywe employ two belt-tightenersk c, which are secured to. the lower ends of the standards E, so as to keep the two belts, e e, always under proper tension when the slat is being tenoned. These arms, r: k, are shown `clearly lin gs. 2 and 4. The outer end of the arbor, al, is adapted for receiving auger bits, a2, for boring the mortises in the stiles, J,'for receiving the tenons on theslats. The stile to be bored is supported upon a transverse beam, K, which is sustained in a horizontal position 7at one end of the frame, A, by means of jointed arms Z Z, which admit of. saidbeam being raised or lowered without moving ity out of a horizontal position. An arm, m, is secured by' means of a set-screw to the shaft C, near the standard D g and to the outer end of this arm another arm, lm', is secured, which projects upward,` and carries a spring pin n, the axis of which is parallel to the axis of the a'rbor al, as shown in iig. 1. This spring pin, n, has a headformed on one end, and its opposite end is slightly tapered, so as`to enter the holes made in the stile by the auger bit a2, and not only hold the stilel down upon the table or beam K, but press the stile up firmly against a ledgewhich is formed on this beam. The arm m is connected to arm m by means oi' a set-screw, so that the axis of pin n can be adjusted up or down, or at any required distance from the axis of the auger a2? for boring stiles'of different thickness, and for boring holes at different distances apart, as may be required. The pin, n, servesl as a gaugefor adjusting the stiles up to the auger after one hole has 'been bored in a stile. This spring pin will render unnecessary the lmarking oii 'of each stile to find the position or distance for boring the holes. A vibrating arm, L, which is pivoted to the shaft C, is connected atits upper end to the arbor, al, of the auger, so as to allow this arbor to rotate freely, and at the other' end to a treadle, N, by means of which the attendant can move the arbor and auger toward the stile, J, for boring the holes. The spring s, shown in i dotted lines, fig. 2,moves the auger and its arbor back when the voperator releasesthegtreadle.

Having thus described our invention, what We claim as new, and desire to secure by Letters Patent, is 1. The use of vibrating centering cutters d d', in combination with circular saws@ c, the said cutters and saws being brought into action by means such as described, or the equivalent thereof, and operating substantially as described, for the purpose of forming tenons on slats.

2. Constructing the tenon cutters, OZ d', inl such manner as to compress and taper the extreme outer ends of the tenons on the slats, substantially as'described. 'j

3. The combination of tubular longitudinal cutting and centering tenen cutters d al', lwith slat rests' g g, which are constructed and arranged substantially as described.

4. The combination of the shafts C C', adjustable standards D D and E E, with the slat2 supports EDH, which are also adjustable, the said parts beingbrought into action by means` such as described, or the equivalent thereof, substantiallyas described for the purpose setforth. v

5. The spring pin, n, applied to adjustable arms m m', in combination with the stile support K, and boring tool az, substantially as described. v

6. Holding the'slats by means of the tubular cutters, cutting the 'shoulders of the tenons with the saws,

and then nishing the tenons by means ofthe4 same tubular `cutters which holdthe slats while the saws are operating, all substantially in the manner herein described.

' HIRAM4 SMITH, [SEAL] THOMAS J'. LUMIS. [SEAL] Witnesses:

A. M. NEFF, A. J. Binsorir. 

